French forward Lacazette, 27, looks oblivious to his surroundings as he inhales deeply from a balloon while lolling back on a plush sofa.

Gabon striker Aubameyang, 29 — the Premier League’s current top goalscorer — and Bosnian defender Sead Kolasinac, 25, also appear with balloons in their mouths.

And French whizkid Matteo Guendouzi, 19, appears to lose consciousness after being egged on to join the binge on nitrous oxide gas — which can cause coordination problems, heart attacks and even death.

The poodle-haired midfielder slumps to one side on a sofa surrounded by laughing team-mates clutching balloons and gas canisters.